ACHEN HENDERSON - Key Persons


Carol Sadler

Job Titles:
  • CA, CPA ( Illinois, U.S. ), TEP
A people person, Carol relishes spending time with others, be it clients, colleagues, family, or friends. She values integrity and collaboration and enjoys meeting with clients to give them the information they need to build excellent businesses. A technical expert in U.S. and Canadian tax, she is a valuable resource for U.S. clients doing business in Canada, Canadian clients doing business in the U.S., and individuals subject to tax in both Canada and the U.S. Knowing the tax law, she strives to translate "tax" and legal jargon into English and create a seamless process for our clients

Chris Chung

Chris has been simplifying tax and accounting for businesses of all sizes for over ten years. Chris' focus is on domestic and international tax for private companies. After a multi-year stint at a mid-market firm practicing international tax, Chris has joined Achen Henderson to get back to his roots: providing clarity to owner-managers growing their business; the reason he got into the profession. Chris provides clarity on tax and accounting to owner-managers. Chris oversees the Canadian Corporate Compliance Group at Achen Henderson. Chris graduated from the University of Calgary before his career took off in a small firm in Calgary to provide cross-border personal tax services. He continued his path and grew into a Senior Tax Manager role at a mid-size firm that expanded his knowledge from personal taxes to private and public entities alike. He is a Chartered Professional Accountant (CPA), qualifying as a Certified General Accountant (CGA).

Clayton E. Achen

Job Titles:
  • CA, TEP
Clayton is the visionary driving force behind Achen Henderson, the partner who looks into the future, sees what he wants to create, and brings everyone along on the adventure. His dream is twofold: to be at the forefront of the evolution of the accounting industry and enjoy his life while helping our clients enjoy building their businesses. Clayton is the visionary driving force behind Achen Henderson. Clayton is our Canadian tax expert and has a background in tax compliance, planning, and strategy. He has worked with a wide variety of clients ranging from owner-managed small businesses to publicly traded oil and gas companies. He specializes in the taxation of private companies, transactions, and high-net-worth families. Clayton has served on several Boards of Directors including Music Seeds International, and currently sits on the board of the Elder Statesmen Group. After a decade of retail management, Clayton obtained his Bachelor of Management from the University of Lethbridge in Alberta. He returned to Calgary where he articled for a mid-market multinational accounting firm then worked for several years in the tax group at another Big-4 accounting firm. Clayton is a Chartered Professional Accountant (CPA), qualifying as a Chartered Accountant (CA), and holds the Trust and Estate Practitioner (TEP) designation. Clayton has completed Parts I and II of CPA Canada's In-depth Tax course and advanced studies in owner-manager taxation, as well as the Canadian Petroleum Tax Society's Taxation of Canadian Oil and Gas Companies courses. He is also a member of the Society of Trust and Estate Practitioners and a member of the Canadian Tax Foundation. In 2019, Clayton was invited to testify to the Standing Committee on Finance in Parliament where he advocated for Canadian Private Companies.

Connie Guo

Job Titles:
  • Engagement Coordinator
With over 7 years of experience as an Administrator Assistant at a Big-4 accounting firm, you can trust Connie to finish things in a timely matter. She has a strong drive to work hard, do things right, make customers happy and ensure that our team is on the right track! Connie is the glue that holds our workflow together, making sure everything is on track and completed on time! As our Engagement Coordinator, Connie coordinates all Achen Henderson's work; she is the glue that holds at Achen Henderson together. Connie is a kind person, a strong listener and she is incredibly reliable, which matters a lot in our fast-paced environment! During non-work time, you will find Connie going on walks in nature, admiring the nighttime moonlight and morning sun reflections. She spends free time with her friends and family, teaching children Abacus, and travelling all around the world.

David Crawford

David is our National Indirect Tax Leader and has worked in Indirect Taxation for over 25 years. David has worked in both public practice (Big 4/7) and government and has been instrumental in devising unique indirect tax solutions and identifying savings opportunities for clients, while also managing their indirect tax compliance risks, including many years of indirect tax controversy and audit support.  Prior to joining our team, David was an Indirect Tax Partner at a global accounting firm. David focuses on the real estate and energy sectors and assists clients in managing their compliance with sales, excise, carbon and fuel taxes.  David has worked with various types of clients across numerous industries and has indirect tax knowledge and experience to help solve our clients' important indirect tax problems. David works closely and proactively with his clients to manage their indirect tax advisory, planning, audit support and controversy. David provides Indirect Tax support to medium-sized accounting firms across the country. David is a CPA and CMA and has been a Certified Management Accountant (Alberta) since 1999 and a Chartered Professional Account (Canada) since 2015. He is also a past co-chair of the Sales and Indirect Tax committee of Canadian Association of Petroleum Producers. David's work with this and other committees, he was a liaison between industry and government and engaged in various indirect tax issues, interfacing and working with industry colleagues and government finance and program administration officials.  David has published numerous articles, papers, and presentations on a variety of indirect tax matters.

George Henderson

Nothing fazes George and his calm, logical, laid-back energy is the perfect counterpoint to Clayton's drive and determination. Detail-oriented, he finds peace in the present moment, finding meaning in whatever task is in front of him. George is focused on building lasting relationships and delivering excellent client service. George is our accounting and controls expert with a background in accounting and financial reporting. He worked for many years in the private company groups of several large mid-market accounting firms and has also worked as a controller for a publicly traded oil and gas service company. George completed his Bachelor of Management at the University of Lethbridge in Alberta. He then articled at a national accounting firm in Red Deer, Alberta, before returning to Calgary where he worked his way up the ranks of a multinational accounting firm in their private enterprise group. Most recently, George worked as a controller for a publicly traded oil and gas services company. He is a Chartered Professional Accountant (CPA), qualifying as a Chartered Accountant (CA). George has extensive experience in financial reporting, financial statement preparation and taxation of private companies. He is focused on building lasting relationships and delivering excellent client service.